Category: 19444-84-9

Chemistry, like all the natural sciences, Computed Properties of C4H6O3, begins with the direct observation of nature¡ª in this case, of matter.19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, SMILES is OC1CCOC1=O, belongs to tetrahydrofurans compound. In a document, author is Maneechakr, Panya, introduce the new discover.

Catalytic conversion of fructose into 5-HMF under eco-friendly-biphasic process

One-pot conversion of fructose into valuable 5-hydroxymethyl-2-furaldehyde (5-HMF) was investigated under a deep eutectic solvent-biphasic system. The role of ChCl, as an inexpensive and safe quaternary ammonium salt, was clearly found to be significant in the reaction. It improved the yield of 5-HMF from fructose dehydration and suppressed the side reactions as well. In addition, the deep eutectic solvent system exhibited a good recyclability with only a small decrease in the 5-HMF yield, while ChCl could be easily recrystallized in the presence of acetonitrile (ACN) (for 5 cycles) or tetrahydrofuran (THF) (for 2 cycles). This research provides a green way for the 5-HMF production via a reusable-biphasic process.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 19444-84-9. Computed Properties of C4H6O3.

Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

In an article, author is Ela, Raisa Carmen Andeme, once mentioned the application of 19444-84-9, Name: 3-Hydroxydihydrofuran-2(3H)-one, Name is 3-Hydroxydihydrofuran-2(3H)-one, molecular formula is C4H6O3, molecular weight is 102.09, MDL number is MFCD00134268, category is tetrahydrofurans. Now introduce a scientific discovery about this category.

Double-Shell Lignin Nanocapsules Are a Stable Vehicle for Fungicide Encapsulation and Release

Industry is increasingly turning to biobased and environmentally benign materials for use in high-value applications. Kraft lignin’s low cost and inherent properties, such as its easily tunable amphiphilic nature, adsorption capacity, and natural cross-linking tendency, make it suitable for use as a raw material for high-value nanomaterials. To support that need, this paper describes the synthesis of innovative, double-shelled lignin nanocapsules from hardwood kraft lignin, their performance towards encapsulating a fungicide, and effectiveness at controlling its release. The recovered lignin was dissolved without further modification in tetrahydrofuran and inserted dropwise into a water/ethanol solution containing sacrificial surfactant templates. Monodispersed, hollow, double-shell nanocapsules were produced via a two-step self-assembly. The water/ethanol solution acted as a nonsolvent while simultaneously providing strategic sites for controlled-size production. The shells of the nanocapsules were cross-linked with biodegradable maleic anhydride to bolster the structural stability. The average hydrodynamic diameter of the particles was 241.8 +/- 33.3 nm, and these structures were stable in water for a period of eight months. The specific surface area of kraft lignin increased by 4-fold in the double-shell nanocapsule form. The nanocapsules were loaded with propiconazole at an entrapment efficiency of 56.1%. This system could represent an effective method to enable biologically activated, controlled release of fungicides.

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Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, molecular formula is C4H6O3. In an article, author is Mallurwar, Naveen Kumar,once mentioned of 19444-84-9, Category: tetrahydrofurans.

Stereoselective Approaches for Building the C14-C21 Fragment of Eribulin

Herein, we report a practical stereoselective synthesis of C14-C21 and C15-C21 tetrahydrofuran-based fragment of eribulin using two different approaches. The approach utilizes iodoetherification and intra molecular oxa-Michael additions as key steps in individual approaches using R,R-tartaric acid and L-ascorbic acids as cost effective chiral starting materials.

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Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, molecular formula is C4H6O3, belongs to tetrahydrofurans compound, is a common compound. In a patnet, author is Rakipov, Ilnaz T., once mentioned the new application about 19444-84-9, Recommanded Product: 19444-84-9.

Thermochemistry of Solution, Solvation and Hydrogen Bonding of Chloroform in Linear and Cyclic Ethers

In this work the thermochemistry of solution, solvation and hydrogen bond formation of chloroform in linear and cyclic ethers was studied. The infinite dilution solution enthalpies of chloroform in diethyl ether, diglyme, 1,4-dioxane, tetrahydrofuran, 12-crown-4 and 15-crown-5 were measured at 298.15 K. The solvation and hydrogen bonding enthalpies of chloroform in the ethers were calculated. It was found that the hydrogen bonding enthalpies of chloroform in the ethers are significantly higher for linear than for cyclic ethers. The hydrogen bonding of ethers with chloroform was discussed in cases when ethers act as a solute or solvent.

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Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

Application of 19444-84-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, SMILES is OC1CCOC1=O, belongs to tetrahydrofurans compound. In a article, author is Nootem, Jukkrit, introduce new discover of the category.

Solvatochromic triazaborolopyridinium probes toward ultra-sensitive trace water detection in organic solvents

A series of triazaborolopyridiniums (TBP) has been synthesized by varying electron-tunning substituents. The TBP derivatives with electron-withdrawing groups, including cyano, and nitro moieties, exhibited solvatochromic properties due to the internal charge transfer (ICT) effect. The density functional theory (DFT) calculations suggested that the nitro-substituted TBP derivative (8) possessed the highest change in dipole moment upon excitation (Delta mu) yielding the most distinctly large stokes shift and low fluorescence quantum yields as the solvent polarity increased. In addition, compound 8 displayed an apparent fluorescence quenching in the presence of hydrogen bond-donating molecules (e.g. methanol, ethanol, water); therefore, it was chosen to be utilized as a trace water detector in four common solvents, including, tetrahydrofuran (THF), acetonitrile (MeCN), acetone, and dimethylformamide (DMF). The satisfying linear relationship between the ratios of the blank fluorescence intensity to the decreased fluorescence intensity (I-0/I) and the trace water content was used to determine the limits of detection (LOD) of water. The low LODs (0.028% for THF, 0.013% for MeCN, 0.021% for acetone, and 0.045% for DMF) confirmed the capability of compound 8 as a super-sensitive water sensor in organic solvents.

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Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, SMILES is OC1CCOC1=O, in an article , author is Perez-Arce, Jonatan, once mentioned of 19444-84-9, Recommanded Product: 19444-84-9.

A novel and efficient approach to obtain lignin-based polyols with potential industrial applications

A family of lignin-based polyols (LBPs) has been prepared and characterized using a novel and unprecedented synthetic approach consisting of a cationic ring opening polymerization reaction of oxiranes in the presence of tetrahydrofuran as both the solvent and co-monomer and an organosolv lignin (OL) at atmospheric pressure and room temperature in acidic media. This new route avoids the drawbacks of the current base-catalyzed lignin oxypropylation method used to obtain LBPs, such as the formation of a large amount of side products, the harsh reaction conditions (high temperatures (>150 degrees C) and pressure) resulting in lignin fragmentation and the generation of phenolic moieties that produce an unpleasant odour limiting the fields of application of LBPs. To demonstrate the versatility of the novel proposed synthetic route, several LBPs were obtained using butylene oxide, propylene oxide, glycidol and epichlorohydrin as oxiranes. The characterization of the obtained LBPs was performed by means of gel permeation chromatography (GPC), thermo-gravimetric analysis (TGA), differential scanning calorimetry (DSC), and attenuated total reflection-Fourier transform infrared (ATR-FTIR), as well as determination of the hydroxyl number. LBPs with a lignin content from 11.3 to 30.1 wt%, and weight average molecular weights from 2730 to 30 258 g mol(-1), and hydroxyl values from 53 to 253 mg KOH per g were obtained. Furthermore, the reactivity of these LBPs with diisocyanates was evidenced and a plausible reaction mechanism is proposed. This novel developed method is of potential industrial interest, mainly in the field of the pulp industry, of which the major byproduct is lignin, as well as in the bio-polyol and bio-polymer industries.

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Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

Reference of 19444-84-9, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, SMILES is OC1CCOC1=O, belongs to tetrahydrofurans compound. In a article, author is Pekdemir, Mustafa Ersin, introduce new discover of the category.

Thermal and dielectric investigation of magnetic nanoparticles functionalized with PVC via click chemistry

In the first phase, PVC was modified with sodium azide through a nucleophilic substitution reaction. Then, the propargyl methacrylate was synthesized from propargyl alcohol and methacryloyl chloride. The copolymerization of propargyl methacrylate and vinyltrimethoxysilane was carried out by free-radical polymerization method in tetrahydrofuran (THF) at 70 degrees C in with AIBN as the initiator. The magnetic nanoparticle was bonded to vinyltrimethoxysilane units of the copolymer. Finally, the copolymer with propargyl end group bearing the magnetic nanoparticle on its side chain was bonded to PVC-N(3)by click reaction. FTIR spectroscopy was used for the characterization. The thermal stability of PVC decreased after the azidation reaction and increased by grafting of magnetic nanoparticles to the copolymer. Vibration sample magnetometer (VSM) measurements revealed that the product reached saturation magnetization (M-s) at 33.7 emu/g, while the pure Fe(3)O(4)nanoparticle showedM(s)value of 53.2 emu/g. As the applied frequency increased, the dielectric constant (epsilon ‘) and dielectric loss factor (epsilon ”) of the copolymers diminished, while the AC conductivity (sigma(ac)) increased.

Reference of 19444-84-9, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 19444-84-9.

Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, molecular formula is C4H6O3, belongs to tetrahydrofurans compound. In a document, author is Rigkos, Georgios, introduce the new discover, Name: 3-Hydroxydihydrofuran-2(3H)-one.

An improved fabric-phase sorptive extraction protocol for the determination of seven parabens in human urine by HPLC-DAD

An improved fabric-phase sorptive extraction (FPSE) protocol has been developed and validated herein for the simple, fast, sensitive and green determination of seven parabens-methyl paraben, ethyl paraben, propyl paraben, butyl paraben, isopropyl paraben, isobutyl paraben and benzyl paraben-in human urine samples by HPLC-DAD. The mobile phase consisted of ammonium acetate (0.05m) and acetonitrile, while total analysis time was 13.2 min. Sol-gel poly (tetrahydrofuran) coated FPSE membrane resulted in optimum extraction sensitivity for the seven parabens. The novel FPSE medium as well as the improved and faster sample preparation procedure resulted in lower limit of detection and quantitation values in comparison with previously reported methods. The separation was carried out using an RP-HPLC method with a Spherisorb C(18)column and a flow rate of 1.4 ml/min. The validation of the analytical method was carried out by means of linearity, precision, accuracy, selectivity, sensitivity and robustness. For all seven parabens, the limits of detection and quantitation were 0.003 and 0.01 mu g/ml, respectively. Relative recovery rates were between 86.3 and 104%, while RSD values were <12.6 and 19.3% for within- and between-day repeatability, respectively. The method was subsequently applied to real human urine samples. Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 19444-84-9. Name: 3-Hydroxydihydrofuran-2(3H)-one.

Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. COA of Formula: C4H6O3, 19444-84-9, Name is 3-Hydroxydihydrofuran-2(3H)-one, SMILES is OC1CCOC1=O, in an article , author is Meng, Qingguo, once mentioned of 19444-84-9.

Effect of Common Guest Molecules on the Lattice Constants of Clathrate Hydrates

Natural gas hydrates are considered as ideal alternative energy resources for the future, and the relevant basic and applied research has become more attractive in recent years. The influence of guest molecules on the hydrate crystal lattice parameters is of great significances to the understanding of hydrate structural characteristics, hydrate formation/decomposition mechanisms, and phase stability behaviors. In this study, we test a series of artificial hydrate samples containing different guest molecules (e.g. methane, ethane, propane, iso-butane, carbon dioxide, tetrahydrofuran, methane + 2,2-dimethylbutane, and methane + methyl cyclohexane) by a low-temperature powder X-ray diffraction (PXRD). Results show that PXRD effectively elucidates structural characteristics of the natural gas hydrate samples, including crystal lattice parameters and structure types. The relationships between guest molecule sizes and crystal lattice parameters reveal that different guest molecules have different controlling behaviors on the hydrate types and crystal lattice constants. First, a positive correlation between the lattice constants and the van der Waals diameters of homologous hydrocarbon gases was observed in the single-guest-component hydrates. Small hydrocarbon homologous gases, such as methane and ethane, tended to form sl hydrates, whereas relatively larger molecules, such as propane and iso-butane, generated sll hydrates. The hydrate crystal lattice constants increased with increasing guest molecule size. The types of hydrates composed of oxygen-containing guest molecules (such as CO2 and THF) were also controlled by the van der Waals diameters. However, no positive correlation between the lattice constants and the van der Waals diameters of guest molecules in hydrocarbon hydrates was observed for CO2 hydrate and THF hydrate, probably due to the special interactions between the guest oxygen atoms and hydrate cages. Furthermore, the influences of the macromolecules and auxiliary small molecules on the lengths of the different crystal axes of the sH hydrates showed inverse trends. Compared to the methane + 2,2-dimethylbutane hydrate sample, the length of the a-axis direction of the methane + methyl cyclohexane hydrate sample was slightly smaller, whereas the length of the c-axis direction was slightly longer. The crystal a-axis length of the sH hydrate sample formed with nitrogen molecules was slightly longer, whereas the c-axis was shorter than that of the methane + 2,2-dimethylbutane hydrate sample at the same temperature.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 19444-84-9, you can contact me at any time and look forward to more communication. COA of Formula: C4H6O3.

Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem